Just saw your note that you sometimes fly without a radio. I guess that's what puts the "personal" in "personal preference"...if I'm going to make a long cross-country, I'd consider having a radio more important than avoiding controlled airspaces, but that's what makes the world go around.
But if you are really flying without electrics and don't even have a transponder, then "VFR corridors" through class B are irrelevant. There's are Mode C veils surrounding all Class Bs--if you don't have a transponder, you must stay out of the class B, (You can still fly within the veil but under the Class B shelves in the class E, though, if your plane was built without an electrical system. For an airspace refresher, including explanations of the Alert, Warning, and Military Ops areas along your route, see here: www.faasafety.gov/files/gslac/courses...)
The rest of my note is still valid. The airspace issues you perceive are not as big a deal as you think they are. Flying south of the Houston B is easy. For the C's and D's, fly over them if you don't want to go around. Be aware of and avoid any TFRs around Corpus. Stay out of any active MOAs. Don't fly into any of the parachutes around RAS, and enjoy your flight.